There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A cached crafted response can cause an out-of-bounds read if custom Lua code calls
    getDomainListByAddress() or getAddressListByDomain() on a packet cache. (CVE-2026-33598)

  - An attacker might be able to inject HTML content into the internal web dashboard by sending crafted DNS
    queries to a DNSdist instance where domain-based dynamic rules have been enabled via either
    DynBlockRulesGroup:setSuffixMatchRule or DynBlockRulesGroup:setSuffixMatchRuleFFI. (CVE-2026-0396)

  - When the internal webserver is enabled (default is disabled), an attacker might be able to trick an
    administrator logged to the dashboard into visiting a malicious website and extract information about the
    running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-
    Origin Resource Sharing (CORS) policy. (CVE-2026-0397)

  - An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when
    custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a
    crash, leading to a denial of service, or access unrelated memory, leading to potential information
    disclosure. (CVE-2026-24028)

  - When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs
    frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries
    regardless of the configured ACL. (CVE-2026-24029)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 431c2753-3503-11f1-bc6d-3c7c3fba4204 advisory.

    https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html reports:

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-637c11815f advisory.

    Update to latest upstream

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1618-1 advisory.

    Update to version 1.9.12.

    - https://www.dnsdist.org/changelog.html#change-1.9.12

    Security issues fixed:

    - CVE-2026-0396: crafted DNS queries triggering domain-based dynamic rules can lead to HTML injection in     the web       dashboard (bsc#1261236).
    - CVE-2026-0397: misconfiguration of the CORS policy can lead to information disclosure (bsc#1261237).
    - CVE-2026-24028: crafted DNS packet parsed by Lua code using `newDNSPacketOverlay` can lead to an out-of-     bounds read       (bsc#1261238).
    - CVE-2026-24029: disabled option on a DNS over HTTPS nghttp2 frontend allows clients to bypass ACLs and     send DoH       queries (bsc#1261239).
    - CVE-2026-24030: crafted DoQ and DoH3 queries can lead to unbounded memory allocation and DoS     (bsc#1261240).
    - CVE-2026-27853: crafted DNS responses sent to a DNSdist using certain methods in custom Lua code     (`changeName`) can       lead to an out-of-bounds write (bsc#1261243).
    - CVE-2026-27854: crafted DNS queries sent to a DNSdist using the `DNSQuestion:getEDNSOptions` method in     custom Lua       code can lead to a use-after-free (bsc#1261241).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6cae4711b3 advisory.

    Update to latest upstream

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - When the internal webserver is enabled (default is disabled), an attacker might be able to trick an     administrator logged to the dashboard into visiting a malicious website and extract information about the     running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-     Origin Resource Sharing (CORS) policy. (CVE-2026-0397)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6235 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6235-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 28, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : dnsdist     CVE ID         : CVE-2026-0396  CVE-2026-0397  CVE-2026-24028                      CVE-2026-24029 CVE-2026-24030 CVE-2026-27853                      CVE-2026-27854 CVE-2026-33254 CVE-2026-33257                      CVE-2026-33260 CVE-2026-33593 CVE-2026-33594                      CVE-2026-33595 CVE-2026-33596 CVE-2026-33597                      CVE-2026-33598 CVE-2026-33599 CVE-2026-33602

    Multiple security vulnerabilities were discovered in the dnsdist     DNS loadbalancer, which could result in denial of service, information     disclosure or ACL bypass.

    For the stable distribution (trixie), these problems have been fixed in     version 1.9.14-0+deb13u1.

    We recommend that you upgrade your dnsdist packages.

    For the detailed security status of dnsdist please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/dnsdist

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-519446405a advisory.

    Update to latest upstream

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
440772	Alpine: multiple dnsdist packages: security update to 2.0.4-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	4/23/2026	7/2/2026	critical
440772	Alpine: multiple dnsdist packages: security update to 2.0.4-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	4/23/2026	7/2/2026	critical
305995	FreeBSD : DNSdist -- vulnerabilities (431c2753-3503-11f1-bc6d-3c7c3fba4204)	Nessus	FreeBSD Local Security Checks	4/11/2026	4/15/2026	high
307046	Fedora 42 : dnsdist (2026-637c11815f)	Nessus	Fedora Local Security Checks	4/17/2026	4/20/2026	high
310228	SUSE SLED15 / SLES15 Security Update : dnsdist (SUSE-SU-2026:1618-1)	Nessus	SuSE Local Security Checks	4/25/2026	4/25/2026	high
307044	Fedora 43 : dnsdist (2026-6cae4711b3)	Nessus	Fedora Local Security Checks	4/17/2026	4/20/2026	high
304466	Linux Distros Unpatched Vulnerability : CVE-2026-0397	Nessus	Misc.	4/1/2026	5/30/2026	medium
310797	Debian dsa-6235 : dnsdist - security update	Nessus	Debian Local Security Checks	4/29/2026	4/29/2026	critical
310697	Fedora 44 : dnsdist (2026-519446405a)	Nessus	Fedora Local Security Checks	4/28/2026	4/28/2026	high

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